<template>
    <div class="detail-container">
      <!--轮播图banner-->
      <div class="detail-banner">
        <van-swipe :autoplay="5000" @change="onChange">
          <van-swipe-item v-for="item in banner" :key="item.id">
            <van-image fit="cover" :src="item.img_url"></van-image>
          </van-swipe-item>
          <!--自定义指示器-->
          <template #indicator>
            <div class="custom-indicator">{{ current + 1 }}/{{bannerNum}}</div>
          </template>
        </van-swipe>
      </div>
      <!--售后服务-->
      <div class="after-sale">
        <van-row>
          <van-col span="8">
            <van-icon name="checked" />30天无忧退货
          </van-col>
          <van-col span="8">
            <van-icon name="checked" />48小时快速退费
          </van-col>
          <van-col span="8">
            <van-icon name="checked" />满88元免邮费
          </van-col>
        </van-row>
      </div>
      <!--产品信息-->
      <div class="pro-info">
        <div class="title">{{info.name}}</div>
        <div class="brief">{{info.goods_brief}}</div>
        <div class="price-box">
          <div class="price">{{info.retail_price | RMBformat}}</div>
          <div class="sku">库存:{{info.goods_number}}</div>
        </div>
      </div>
      <!--弹出展示-->
      <van-cell title="售后保障" is-link @click="isSkuShow = true" />
      <!--产品规格-->
      <div class="pro-attribute">
        <div class="pro-h2">产品规格</div>
        <ul>
          <li v-for="(item, index) in attribute" :key="index">
            <span class="th">{{item.name}}</span>
            <span class="td">{{item.value}}</span>
          </li>
        </ul>
      </div>
      <!--产品详情-->
      <div class="pro-content">
        <div class="pro-h2">产品详情</div>
        <div class="content" v-html="info.goods_desc"></div>
      </div>
      <!--常见问题-->
      <div class="pro-answer">
        <div class="pro-h2">常见问题</div>
        <div class="list-item">
          <ul>
            <li v-for="(item, index) in issue" :key="index">
              <h3>{{item.question}}</h3>
              <p>{{item.answer}}</p>
            </li>
          </ul>
        </div>
      </div>
      <!--相关产品-->
      <div class="pro-answer">
        <div class="pro-h2">猜你喜欢</div>
        <div class="list-item">
          <Products :goodsList="goodsList" />
        </div>
      </div>
      <!--sku信息-->
      <van-sku ref="sku" v-model="isSkuShow" :sku="sku" :goods="goods" :hide-stock="sku.hide_stock" @add-cart="addToCart" @buy-clicked="$toast('功能暂未开放')"/>
      <!--工具栏-->
      <GoodActive :goodsCount="goodsCount" @addToCart="addToCart" />
    </div>
  </template>
  
  <script>
  import { GetGoodsDetailData, GetGoodsRelatedData, GetGoodsCountData, PostAddCartData } from '@/request/api'
  import Products from '@/components/Products/Products.vue'
  import GoodActive from '@/components/GoodActive/GoodActive.vue'
  export default {
    name: 'Special',
    components: {
      Products,
      GoodActive
    },
    
    data () {
      return {
        banner: [], // 轮播图数据
        bannerNum: 1, // 轮播图数量，默认为1
        current: '', // 自定义指示器
        info: [], // 产品信息
        attribute: [], // 产品规格
        issue: [], // 常见问题
        goodsList: [], // 相关产品
        isSkuShow: false, // 默认显示
        sku: {
          tree: [],
          hide_stock: false, // false显示，true为隐藏
          price: '0', // 默认价格显示0
          stock_num: 0 // 默认库存显示0
        },
        goods: {
          picture: '' // 弹窗主图
        },
        goodsCount: 0, // 购物车产品数量
        productList: [] // productList数据
      }
    },
    created () {
      // 产品详情
      GetGoodsDetailData({
        id: this.$route.query.id
      }).then(res => {
        // 发送请求，请求这个商品的详情数据
        // console.log(res)
        // 轮播图图片数据
        this.banner = res.data.gallery
        // 轮播图数量
        this.bannerNum = res.data.gallery.length
        // 产品信息
        this.info = res.data.info
        // 产品规格
        this.attribute = res.data.attribute
        // 常见问题
        this.issue = res.data.issue
        // sku主图数据
        this.goods.picture = res.data.info.list_pic_url
        // sku价格
        this.sku.price = res.data.info.retail_price
        // sku库存数量
        this.sku.stock_num = res.data.info.goods_number
        this.productList = res.data.productList
      })
      // 相关产品
      GetGoodsRelatedData({
        id: this.$route.query.id
      }).then(res => {
        // 发送请求，请求这个商品的详情数据
        // console.log(res)
        // 轮播图图片数据
        this.goodsList = res.data.goodsList
      })
      // 购物车产品数量
      GetGoodsCountData().then(res => {
        // console.log(res)
        // 赋值购物车数量
        this.goodsCount = res.data.cartTotal.goodsCount
        // productList数据
        console.log(res.data)
        // this.productList = res.data.productList
      })
    },
    methods: {
      // 轮播图自定义指示器
      onChange (index) {
        this.current = index
      },
      // 加入购物车
      addToCart () {
        // 1.如果sku没有展示的情况下，点击购物车按钮，展示sku
        // 2.如果sku已经在展示的状态下，点击购物车按钮，跳转到购物车页面
        if (this.isSkuShow) {
          // 加入购物车
          // console.log('执行加入购物车操作')
          // 获取要添加的商品数量 $refs.sku.getSkuData .selectedNum 这个方法是Vant文档里面提供的
          // console.log(this.$refs.sku.getSkuData().selectedNum)
          PostAddCartData({
            goodsId: this.$route.query.id,
            productId: this.productList[0].goods_id,
            number: this.$refs.sku.getSkuData().selectedNum
          }).then(res => {
            // console.log(res)
            // 添加到购物车后做两件事
            // 1.更新购物车数量
            if (res.data && res.data.cartTotal) {
              this.goodsCount = res.data.cartTotal.goodsCount
              // 弹窗提示
              this.$toast.success('加入购物车成功')
              // 2.跳转到购物车页面,1s后跳转
              setTimeout(() => {
                this.$router.push('/cart')
              }, 1000)
            } else {
              this.$toast.fail(res.errmsg)
            }
          })
        } else {
          // 打开sku面板
          this.isSkuShow = true
        }
      }
    }
  }
  </script>
  
  <style lang="less" scoped>
  .detail-banner{
    height: 375px;
    .van-image{
      width: 100%;
      height: 375px;
      display: block;
    }
    .custom-indicator{
      position: absolute;
      right: 15px;
      bottom: 15px;
      background-color: rgba(255, 255, 255, .8);
      font-size: 14px;
      color: #333;
      padding: 0 10px;
      height: 20px;
      line-height: 21px;
      border-radius: 15px;
    }
    /deep/ .van-swipe__indicators{
      bottom: 20px;
      .van-swipe__indicator{
        background-color: #fff;
        opacity: .8;
      }
    }
  }
  .after-sale{
    width: 100%;
    background-color: #f1f1f1;
    font-size: 14px;
    color: #333;
    padding: 15px 0;
    text-align: center;
    .van-icon{
      margin-right: 4px;
    }
  }
  .pro-info{
    padding: 20px 10px;
    border-bottom: 10px solid #eee;
    .title{
      font-size: 22px;
      font-weight: bold;
      color: #333;
    }
    .brief{
      font-size: 16px;
      color: #666;
      margin-top: 10px;
    }
    .price-box{
      margin-top: 15px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      .price{
        font-size: 22px;
        color: #f00;
      }
      .sku{
        font-size: 14px;
        color: #999;
      }
    }
  }
  .van-cell{
    padding-left: 10px;
    padding-right: 10px;
  }
  .pro-h2{
    font-size: 18px;
    color: #333;
    padding: 0 10px;
    line-height: 35px;
    border-bottom: 1px solid #eee;
  }
  .pro-attribute{
    border-top: 10px solid #eee;
    ul{
      li{
        background-color: #fff;
        display: flex;
        font-size: 14px;
        color: #333;
        line-height: 22px;
        padding: 0 10px;
        span{
          padding: 10px 0;
        }
        .th{
          width: 65px;
          flex-shrink: 0;
        }
        .td{
          width: 100%;
          overflow: hidden;
          word-break: break-all;
        }
      }
      li:nth-child(even){
        background-color: #f1f1f1;
      }
    }
  }
  .pro-content{
    border-top: 10px solid #eee;
    .pro-h2{
      text-align: center;
      border: none;
      padding-top: 10px;
    }
    .content{
      margin-top: 5px;
      font-size: 16px;
      color: #333;
      word-break: break-all;
      pre{
        padding: 16px;
        overflow: auto;
        background-color: #f6f8fa;
        border-radius: 3px;
      }
      /deep/ img{
        width: 100%;
        display: block;
      }
    }
  }
  .pro-answer{
    border-top: 10px solid #eee;
    padding-bottom: 20px;
    .pro-h2{
      text-align: center;
      border: none;
      padding-top: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .pro-h2::before{
      content: '';
      width: 30px;
      height: 1px;
      background-color: #ddd;
      display: inline-block;
      margin-right: 10px;
    }
    .pro-h2::after{
      content: '';
      width: 30px;
      height: 1px;
      background-color: #ddd;
      display: inline-block;
      margin-left: 10px;
    }
    ul{
      padding: 0 10px;
      li{
        padding-left: 10px;
        margin-top: 20px;
        position: relative;
        h3{
          font-size: 16px;
          color: #333;
          line-height: 24px;
          margin-bottom: 5px;
        }
        p{
          font-size: 14px;
          color: #666;
          line-height: 22px;
        }
      }
      li::before{
        content: '';
        width: 6px;
        height: 6px;
        background-color: #333;
        border-radius: 10px;
        position: absolute;
        left: 0;
        top: 8px;
      }
    }
  }
  .product-container{
    height: auto;
    padding-bottom: 0;
    /deep/ ul{
      padding-bottom: 0;
    }
  }
  </style>
  